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Finding the Fourth Proportional to 27,060.86, 40,605.87 and 20,485.46

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Solution

The fourth proportional to 27,060.86, 40,605.87 and 20,485.46 is: 30,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,060.86 : 40,605.87 = 20,485.46 : x
  2. Step 2: Convert to fraction form
    27,060.86/40,605.87 = 20,485.46/x
  3. Step 3: Cross multiply
    27,060.86x = 40,605.87 × 20,485.46
  4. Step 4: Simplify right side
    27,060.86x = 831,829,925.65
  5. Step 5: Solve for x
    x = 831,829,925.65/27,060.86
  6. Step 6: Final answer
    x = 30,739.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.